metaXplor is an interactive viral and microbial metagenomic data manager. It aims at storing large volumes of user-defined sample, sequence and assignment information while providing a user-friendly fine-filtering web-interface. This online GUI also offers means to share datasets with collaborators, BLAST external sequences against them, and confirm assignments by running phylogenetic placement. metaXplor is available as a set of Docker containers that make it simple to deploy on various infrastructures.